The document discusses preventing anemia through proper nutrition. It presents the case of Erika, a student who has heard on the radio about the importance of preventing anemia but does not know why. Her family has recently changed their diet to include foods like liver, chicken blood, and spleen. The document asks how families and communities can prevent anemia and what foods can be consumed to fight it. It provides context on measuring central tendency values like mean, median and mode to express representative values of foods that help combat anemia.